Design mil-dtl-01222 type iii style a or b
A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 5998-01-370-4384
NSN 5895-00-231-1461
NSN 6685-01-181-3125
NSN 5915-01-630-0872
NSN 5835-01-029-1702
NSN 5905-01-513-9604
NSN 6220-01-011-0865
NSN 6110-00-004-6937
NSN 5985-00-170-6768
NSN 5925-00-933-6303
NSN 5855-00-885-8452
NSN 5835-01-263-1293